Materials Testing AEM 72 Term 1

The most effective NDT method for locating surface cracks in ferromagnetic materials is:

• Ultrasonic testing

• Radiographic testing

• Magnetic particle testing

• Liquid penetrant testing

A tensile test is what type of test?

• Destructive Test

• Constructive Test

• Compression test

• Hardness Test

How is stress calculated?

• Number of sleepless nights divided by number of cups of coffee

• Divide load (F) by the original test sample cross-sectional area (A₀).

• Elongation (δ) under load divided by the original Length (L₀)

• Stress (σ) divided by strain (ε)

Material failure with little or no ductility.

• Brittleness

• Toughness

• Ductility

• Plasticity

Which color curve represents the material with the most strength?

• red
• green
• blue

Tensile test can be performed on

• Impact testing machine

• Universal testing machine

• Rockwell tester

• Brinell tester

name the parts of the graph B

• stress

• strain

• fracture point

• elasticity range

What does 'brittle' mean?

• Soft
• Easily breakable
• Easily bendable
• Tough

name the parts of the graph G

• stress

• strain

• fracture point

• elasticity range

What kind of indenter is used in a Brinell test?

• Diamond cone

• Steel ball

• Elongated Pyramid

• Pyramid